Abstract: A communication device includes an acquisition unit configured to acquire first information for communication in which a first frequency band has been used, the first frequency band being an unlicensed band in which a plurality of communication schemes can be mixed, from a second frequency band different from the first frequency band, and a communication control unit configured to control communication in a predetermined communication scheme in which the first frequency band has been used, on the basis of the first information.

Abstract: A display circuit device includes a CPU, a display control circuit, and a drive signal generation circuit. The drive signal generation circuit includes a generation circuit that generates a first CRC value that is a CRC value of command data received from the CPU, and a transmission circuit that transmits the first CRC value to the CPU. The CPU includes an expected value generation circuit that generates a second CRC that is a CRC value of command data before being input to the drive signal generation circuit, a reception circuit that receives the first CRC value, a comparison circuit that compares the first CRC value with the second CRC value, and a control circuit that executes control based on a comparison result obtained by the comparison circuit.

Abstract: An information processing apparatus including at least one processor configured to perform a first process for associating first information for a user of a terminal to obtain a cryptographic asset with identification information of the user, and a second process for associating the cryptographic asset based on the first information with the identification information of the user, based on verification with respect to the user may be provided.

Abstract: A display circuit device includes a CPU, a display control circuit, and a drive signal generation circuit. The drive signal generation circuit includes a generation circuit that generates a first CRC value that is a CRC value of command data received from the CPU, and a transmission circuit that transmits the first CRC value to the CPU. The CPU includes an expected value generation circuit that generates a second CRC that is a CRC value of command data before being input to the drive signal generation circuit, a reception circuit that receives the first CRC value, a comparison circuit that compares the first CRC value with the second CRC value, and a control circuit that executes control based on a comparison result obtained by the comparison circuit.

Abstract: The present technology relates to a transmission device, a transmission method, a reception device, a reception method, and a communication method capable of shortening a pause time of data transmission. According to an aspect of the present technology, a transmission device classifies channels usable for data transmission into a plurality of groups, selects the channels that are used in transmission units and that continue on a time axis from the channels of the different groups in accordance with an identifier, and performs the data transmission of the transmission units by using the selected channels. It is possible to make application to a communication system transmitting data through one-way communication from a transmission device to a reception device.

Abstract: A communication device includes an acquisition unit configured to acquire first information for communication in which a first frequency band has been used, the first frequency band being an unlicensed band in which a plurality of communication schemes can be mixed, from a second frequency band different from the first frequency band, and a communication control unit configured to control communication in a predetermined communication scheme in which the first frequency band has been used, on the basis of the first information.

Abstract: By switching the transmission mode according to the power amount of a power storage unit in a wireless communication terminal, appropriate communication performance is ensured. A communication unit transmits a packet. A comparison unit compares the power amount of the power storage unit with a predetermined threshold. A control unit causes the communication unit to transmit first transmission data in a first transmission mode in a case where the power amount of the power storage unit is larger than a predetermined threshold. Furthermore, the control unit causes the communication unit to transmit second transmission data including a known payload in a second transmission mode in a case where the power amount of the power storage unit is not larger than the predetermined threshold.

Abstract: A communication apparatus and method, an antenna apparatus, and a communication system that prevent reduced communication characteristics are disclosed. In one example, a coupled antenna element positioned in the vicinity of a communication apparatus is detected, adaptation of impedance is controlled on the basis of the detection result, and wireless communication is performed via the coupled antenna element with the adapted impedance. In addition, an antenna element is excited by a wireless signal from a communication apparatus positioned in the vicinity of the antenna element, and this communication apparatus is notified of being positioned in the vicinity of this antenna element.

Abstract: The present technology relates to a transmission device, a transmission method, a reception device, a reception method, and a communication method capable of shortening a pause time of data transmission. According to an aspect of the present technology, a transmission device classifies channels usable for data transmission into a plurality of groups, selects the channels that are used in transmission units and that continue on a time axis from the channels of the different groups in accordance with an identifier, and performs the data transmission of the transmission units by using the selected channels. It is possible to make application to a communication system transmitting data through one-way communication from a transmission device to a reception device.

Abstract: LDPC coding is executed using a check matrix of an LDPC code whose code length is 736 bits and whose code rate is 1/4, and modulation is executed using a repetition unit that has an LDPC code obtained by the LDPC coding, repeatedly arranged therein. The LDPC code includes information bits and parity bits, the check matrix includes an information matrix portion corresponding to the information bits and a parity matrix portion corresponding to the parity bits, the parity matrix portion has a stepwise structure, the information matrix portion is indicated by a check matrix initial value table, and the check matrix initial value table is a predetermined table indicating positions of elements of “1” of the information matrix portion for each eight columns. This technique is applicable to, for example, information transmission using the LDPC code.

Abstract: The present technology relates to communication apparatus and method, and a communication system that enable communication control according to a gain of an antenna element. In a communication apparatus that performs wireless communication via an antenna element, a state of a gain of the antenna element is detected, a threshold value for carrier sense is controlled on the basis of the state of the gain of the antenna element that has been detected, the carrier sense is performed to determine whether communication using the threshold value that has been set possible, and wireless communication is performed in a case where it is determined that the communication is possible. The present disclosure can be applied to, for example, a transmission apparatus, a reception apparatus, a transmission/reception apparatus, a communication apparatus, electronic equipment, a computer, a program, a storage medium, a system, and the like.

Abstract: The disclosure relates to a signal processing device and method, and an information processing device and method, in which a distance between a position where a signal is transmitted and a position where the signal is received can be obtained with higher accuracy. A predetermined signal is transmitted as a radio signal at a predetermined timing known to a receiving side. Additionally, a propagation delay amount, which is a delay amount from a transmission timing to a reception timing of a predetermined signal received as a radio signal, is calculated on the basis of a correlation between the signal and a reference signal synchronized with the transmission timing. Furthermore, the distance between the position where a predetermined signal is transmitted and the position where the signal is received is calculated on the basis of a propagation delay amount of the signal.

Abstract: The present technology relates to a mobile terminal, an information processor, an information processing method, and a program capable of synchronizing time with high precision even in a case where the number of satellites that can be captured is small. In a case where the number of satellites that can be captured is less than a predetermined number, a mobile terminal of one aspect of the present technology does not perform positioning, and generates and outputs, from a positioning unit, pulse signals at predetermined intervals synchronized with a time of the satellite that can be captured, on the basis of information from the satellite. The mobile terminal then maintains time synchronization of wireless communication with an external device of a wireless communication unit with reference to the pulse signal, and performs the wireless communication. The present technology can be applied to terminals equipped with a positioning function based on GNSS and a wireless communication function such as LPWA.

Abstract: LDPC coding is executed using a check matrix of an LDPC code whose code length is 736 bits and whose code rate is 1/4, and modulation is executed using a repetition unit that has an LDPC code obtained by the LDPC coding, repeatedly arranged therein. The LDPC code includes information bits and parity bits, the check matrix includes an information matrix portion corresponding to the information bits and a parity matrix portion corresponding to the parity bits, the parity matrix portion has a stepwise structure, the information matrix portion is indicated by a check matrix initial value table, and the check matrix initial value table is a predetermined table indicating positions of elements of “1” of the information matrix portion for each eight columns. This technique is applicable to, for example, information transmission using the LDPC code.

Abstract: A communication apparatus and method, an antenna apparatus, and a communication system that prevent reduced communication characteristics are disclosed. In one example, a coupled antenna element positioned in the vicinity of a communication apparatus is detected, adaptation of impedance is controlled on the basis of the detection result, and wireless communication is performed via the coupled antenna element with the adapted impedance. In addition, an antenna element is excited by a wireless signal from a communication apparatus positioned in the vicinity of the antenna element, and this communication apparatus is notified of being positioned in the vicinity of this antenna element.

Abstract: The present technology relates to communication apparatus and method, and a communication system that enable communication control according to a gain of an antenna element. In a communication apparatus that performs wireless communication via an antenna element, a state of a gain of the antenna element is detected, a threshold value for carrier sense is controlled on the basis of the state of the gain of the antenna element that has been detected, the carrier sense is performed to determine whether communication using the threshold value that has been set is possible, and wireless communication is performed in a case where it is determined that the communication is possible. The present disclosure can be applied to, for example, a transmission apparatus, a reception apparatus, a transmission/reception apparatus, a communication apparatus, electronic equipment, a computer, a program, a storage medium, a system, and the like.

Abstract: Disclosed herein is a gain control circuit including: an amplifying section configured to amplify an input voltage in such a manner that amplitude of an output voltage at an output terminal is kept constant; an allowable voltage acquirer configured to acquire an allowable voltage of an apparatus connected to the output terminal; a voltage divider configured to divide the output voltage according to a ratio between a maximum voltage of the amplified input voltage and the allowable voltage; and an adjusting section configured to further amplify the amplified input voltage according to the ratio and supply a resulting voltage to the output terminal.

Abstract: Disclosed herein is a gain control circuit including: an amplifying section configured to amplify an input voltage in such a manner that amplitude of an output voltage at an output terminal is kept constant; an allowable voltage acquirer configured to acquire an allowable voltage of an apparatus connected to the output terminal; a voltage divider configured to divide the output voltage according to a ratio between a maximum voltage of the amplified input voltage and the allowable voltage; and an adjusting section configured to further amplify the amplified input voltage according to the ratio and supply a resulting voltage to the output terminal.